<template>
  <div class="app-container">
    <!-- 查询 开始 -->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="teacherQuery.name" placeholder="讲师名"/>
      </el-form-item>

      <el-form-item>
        <el-select v-model="teacherQuery.level" clearable placeholder="讲师头衔">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="teacherQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="teacherQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="fetchData()">查询</el-button>
      <el-button type="default" @click="resetData()">重置</el-button>
    </el-form>
    <!-- 查询 结束 -->

    <!-- 数据表格 开始 -->
    <el-table
    :data="list"
    style="width: 100%;height:100%"
    max-height="100%">
    <el-table-column
      fixed
      label="序号"
      width="70"
      align="center">
      <template slot-scope="scope">
        {{ (page - 1) * limit + scope.$index + 1 }}
      </template>
    </el-table-column>

    <el-table-column
      prop="name"
      label="名称"
      align="center">
    </el-table-column>

    <el-table-column
      label="头街">
      <template slot-scope="scope">
        {{ scope.row.level===1?'高级讲师':'首席讲师' }}
      </template>
    </el-table-column>

    <el-table-column
      prop="intro" 
      label="资历"
      :show-overflow-tooltip="true">
    </el-table-column>

    <el-table-column
      prop="gmtCreate" 
      label="添加时间" >
    </el-table-column>

    <el-table-column
      prop="sort"
      label="排序">
    </el-table-column>

    <el-table-column
      fixed="right"
      label="操作"
      width="200">
      <template slot-scope="scope">
        <router-link :to="'/teacher/edit/'+scope.row.id">
          <el-button type="primary" size="mini" icon="el-icon-edit">修改</el-button>
        </router-link>
        <el-button
          @click = "removeDataById(scope.row.id)"
          type="danger"
          size="mini">
          删除
        </el-button>
      </template>
    </el-table-column>
  </el-table>
  <!-- 数据表格 结束 -->
  <!-- 分页插件 开始 -->
  <el-pagination
      :current-page="page"
      :page-sizes="[10, 20, 30, 40]"
      :page-size="limit"
      style="padding: 30px 0; text-align: center;"
      layout="total, prev, pager, next, jumper"
      :total="total"
      @current-change="fetchData"
    />
  <!-- 分页插件 结束 -->
  </div>
</template>
<script>
import teacher from '@/api/edu/teacher'
export default {
  
  data(){
    return {
      // listLoading: true, // 是否显示loading信息
      list: null, // 数据列表
      total: 0, // 总记录数
      page: 1, // 页码
      limit: 10, // 每页记录数
      teacherQuery: {}// 查询条件
    }
  },

  created(){ // 当页面加载时获取数据
    this.fetchData()
  },

  methods:{
    fetchData(page = 1){ //调用api层获取数据库中的数据
      this.page = page
      // this.listLoading = true
      teacher.getPageList(this.page,this.limit,this.teacherQuery).then(res => {
        if(res.success === true){
          this.list = res.data.rows
          this.total = res.data.total
        }
        this.listLoading = false
      })
    },

    // 删除
    removeDataById(id) {
      this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          teacher.removeById(id)
          .then(res => {
               this.$message({
                  type: 'success',
                  message: '删除成功'
              }); 
              this.fetchData()
          })
        }).catch((response) => { // 失败
            if (response === 'cancel') {
                this.$message({
                    type: 'info',
                    message: '已取消删除'
                })
            } else {
                this.$message({
                    type: 'error',
                    message: '删除失败'
                })
            }
          })
    },

    // 清空操作
    resetData() {
      this.teacherQuery = {}
      this.fetchData()
    }
  }

}
</script>